81612980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{214771}}^1$

素因数の和:214799

約数の個数: 24

約数和(自身を含む): 180408480

約数和(自身を除く): 98795500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 214771, 429542, 859084, 1073855, 2147710, 4080649, 4295420, 8161298, 16322596, 20403245, 40806490, 81612980]

約数ペア:

[(1, 81612980), (2, 40806490), (4, 20403245), (5, 16322596), (10, 8161298), (19, 4295420), (20, 4080649), (38, 2147710), (76, 1073855), (95, 859084), (190, 429542), (380, 214771)]